wmmoonclock/src/CalcEphem.h

   1 #define DegPerRad       57.29577951308232087680
   2 #define RadPerDeg        0.01745329251994329576
   3 #define FALSE 0
   4 #define TRUE  1
   5
   6
   7 typedef struct Vector {
   8     double x;
   9     double y;
  10     double z;
  11 } Vector;
  12
  13
  14 typedef struct Position {
  15     double x;
  16     double y;
  17     double z;
  18 } Position;
  19
  20
  21 typedef struct CTrans {
  22     double UT;                  /* Universal Time (in decimal hours) */
  23     int    year;                /* 2 digit year */
  24     int    month;               /* 2 digit month of year */
  25     int    day;                 /* 2 digit day of month */
  26     int    doy;                 /* 3 digit Day Of Year */
  27     int    dow;                 /* 1 digit day of week */
  28     char   dowstr[80];          /* Day of week String (e.g. "Sun") */
  29     double gmst;                /* Greenwich Mean Sidereal Time (in radians) */
  30     double eccentricity;        /* Eccentricity of Earth-Sun orbit */
  31     double epsilon;             /* Obliquity of the ecliptic (in radians) */
  32     double lambda_sun;          /* Ecliptic Long. of Sun (in radians) */
  33     double earth_sun_dist;      /* Earth-Sun distance (in units of earth radii) */
  34     double RA_sun;              /* Right Ascention of Sun (in degrees) */
  35     double DEC_sun;             /* Declination of Sun (in degrees) */
  36     Vector Sun;                 /* direction of Sun in GEI system (unit vector) */
  37     Vector EcPole;              /* direction of Ecliptic Pole in GEI system (unit vector) */
  38     double psi;                 /* Geodipole tilt angle (in radians) */
  39     double Dipole_Gcolat;       /* Geographic colat of centered dipole axis (deg.) */
  40     double Dipole_Glon;         /* Geographic long. of centered dipole axis (deg.) */
  41
  42     double RA_moon;             /* Right Ascention of Moon (in degrees) */
  43     double DEC_moon;            /* Declination of Moon (in degrees) */
  44     double MoonPhase;           /* The Phase of the Moon (in days) */
  45     double MoonAge;             /* Age of Moon in Days */
  46     double EarthMoonDistance;   /* Distance between the Earth and Moon (in earth-radii) */
  47     double Glat;                /* Geographic Latitude of Observer */
  48     double Glon;                /* Geographic Longitude of Observer */
  49     double h_moon;              /* Altitude of Moon (in degrees) */
  50     double A_moon;              /* Azimuth of Moon (in degrees) */
  51     int    Visible;             /* Wether or not moon is above horizon */
  52 } CTrans;
  53
  54 void CalcEphem(long int, double, CTrans*);
  55 int  DayofWeek(int, int, int, char*);
  56 int  DayofYear(int, int, int);
  57